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<h2><a href="closure_goog_ui_filterobservingmenuitem.js.html">filterobservingmenuitem.js</a></h2>

<pre class="prettyprint lang-js">
<a name="line1"></a>// Copyright 2007 The Closure Library Authors. All Rights Reserved.
<a name="line2"></a>//
<a name="line3"></a>// Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);
<a name="line4"></a>// you may not use this file except in compliance with the License.
<a name="line5"></a>// You may obtain a copy of the License at
<a name="line6"></a>//
<a name="line7"></a>//      http://www.apache.org/licenses/LICENSE-2.0
<a name="line8"></a>//
<a name="line9"></a>// Unless required by applicable law or agreed to in writing, software
<a name="line10"></a>// distributed under the License is distributed on an &quot;AS-IS&quot; BASIS,
<a name="line11"></a>// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<a name="line12"></a>// See the License for the specific language governing permissions and
<a name="line13"></a>// limitations under the License.
<a name="line14"></a>
<a name="line15"></a>/**
<a name="line16"></a> * @fileoverview Menu item observing the filter text in a
<a name="line17"></a> * {@link goog.ui.FilteredMenu}. The observer method is called when the filter
<a name="line18"></a> * text changes and allows the menu item to update its content and state based
<a name="line19"></a> * on the filter.
<a name="line20"></a> *
<a name="line21"></a> * @author eae@google.com (Emil A Eklund)
<a name="line22"></a> */
<a name="line23"></a>
<a name="line24"></a>goog.provide(&#39;goog.ui.FilterObservingMenuItem&#39;);
<a name="line25"></a>
<a name="line26"></a>goog.require(&#39;goog.ui.ControlContent&#39;);
<a name="line27"></a>goog.require(&#39;goog.ui.FilterObservingMenuItemRenderer&#39;);
<a name="line28"></a>goog.require(&#39;goog.ui.MenuItem&#39;);
<a name="line29"></a>goog.require(&#39;goog.ui.registry&#39;);
<a name="line30"></a>
<a name="line31"></a>
<a name="line32"></a>
<a name="line33"></a>/**
<a name="line34"></a> * Class representing a filter observing menu item.
<a name="line35"></a> *
<a name="line36"></a> * @param {goog.ui.ControlContent} content Text caption or DOM structure to
<a name="line37"></a> *     display as the content of the item (use to add icons or styling to
<a name="line38"></a> *     menus).
<a name="line39"></a> * @param {*=} opt_model Data/model associated with the menu item.
<a name="line40"></a> * @param {goog.dom.DomHelper=} opt_domHelper Optional DOM helper used for
<a name="line41"></a> *     document interactions.
<a name="line42"></a> * @param {goog.ui.MenuItemRenderer=} opt_renderer Optional renderer.
<a name="line43"></a> * @constructor
<a name="line44"></a> * @extends {goog.ui.MenuItem}
<a name="line45"></a> */
<a name="line46"></a>goog.ui.FilterObservingMenuItem = function(content, opt_model, opt_domHelper,
<a name="line47"></a>                                           opt_renderer) {
<a name="line48"></a>  goog.ui.MenuItem.call(this, content, opt_model, opt_domHelper,
<a name="line49"></a>      opt_renderer || new goog.ui.FilterObservingMenuItemRenderer());
<a name="line50"></a>};
<a name="line51"></a>goog.inherits(goog.ui.FilterObservingMenuItem, goog.ui.MenuItem);
<a name="line52"></a>
<a name="line53"></a>
<a name="line54"></a>/**
<a name="line55"></a> * Function called when the filter text changes.
<a name="line56"></a> * @type {Function} function(goog.ui.FilterObservingMenuItem, string)
<a name="line57"></a> * @private
<a name="line58"></a> */
<a name="line59"></a>goog.ui.FilterObservingMenuItem.prototype.observer_ = null;
<a name="line60"></a>
<a name="line61"></a>
<a name="line62"></a>/** @override */
<a name="line63"></a>goog.ui.FilterObservingMenuItem.prototype.enterDocument = function() {
<a name="line64"></a>  goog.ui.FilterObservingMenuItem.superClass_.enterDocument.call(this);
<a name="line65"></a>  this.callObserver();
<a name="line66"></a>};
<a name="line67"></a>
<a name="line68"></a>
<a name="line69"></a>/**
<a name="line70"></a> * Sets the observer functions.
<a name="line71"></a> * @param {Function} f function(goog.ui.FilterObservingMenuItem, string).
<a name="line72"></a> */
<a name="line73"></a>goog.ui.FilterObservingMenuItem.prototype.setObserver = function(f) {
<a name="line74"></a>  this.observer_ = f;
<a name="line75"></a>  this.callObserver();
<a name="line76"></a>};
<a name="line77"></a>
<a name="line78"></a>
<a name="line79"></a>/**
<a name="line80"></a> * Calls the observer function if one has been specified.
<a name="line81"></a> * @param {?string=} opt_str Filter string.
<a name="line82"></a> */
<a name="line83"></a>goog.ui.FilterObservingMenuItem.prototype.callObserver = function(opt_str) {
<a name="line84"></a>  if (this.observer_) {
<a name="line85"></a>    this.observer_(this, opt_str || &#39;&#39;);
<a name="line86"></a>  }
<a name="line87"></a>};
<a name="line88"></a>
<a name="line89"></a>
<a name="line90"></a>// Register a decorator factory function for
<a name="line91"></a>// goog.ui.FilterObservingMenuItemRenderer.
<a name="line92"></a>goog.ui.registry.setDecoratorByClassName(
<a name="line93"></a>    goog.ui.FilterObservingMenuItemRenderer.CSS_CLASS,
<a name="line94"></a>    function() {
<a name="line95"></a>      // FilterObservingMenuItem defaults to using
<a name="line96"></a>      // FilterObservingMenuItemRenderer.
<a name="line97"></a>      return new goog.ui.FilterObservingMenuItem(null);
<a name="line98"></a>    });
</pre>


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